Surface Area Calculator
Calculate the surface area of various 3D shapes like spheres, cylinders, cones, and cubes. Free online math geometry calculator.
About Surface Area Calculator
Calculate the surface area of common 3D geometric shapes including Spheres, Cubes, and Cylinders. Essential for construction, painting, and math homework.
Frequently Asked Questions
Which shapes are supported?
Currently, we support Spheres, Cubes, and Cylinders. More shapes will be added soon.
What is the formula for a Sphere?
Surface Area = 4πr², where r is the radius.
What is the formula for a Cylinder?
Surface Area = 2πrh + 2πr², where r is radius and h is height.
Can I use any unit?
Yes, just match your input units. The output will be in square units (e.g., sq meters, sq inches).
Why do I need surface area?
It's useful for determining how much material (like paint or wrapping paper) is needed to cover an object.
Is the calculation exact?
Yes, we use precise mathematical constants for all calculations.
Can I calculate volume here?
This tool focuses on surface area. Please check our other tools for volume calculations.
Do I need to install anything?
No, it works directly in your web browser.
Is it mobile friendly?
Yes, you can use it on your phone or tablet.
Is it free?
Yes, 100% free.